 *{
    margin: 0;
    padding: 0;
}
.head{
    width: 100%;
    height: 45px;
    background-color: #999;
    color: #666;
    line-height: 45px;
}
.left{
    position: fixed;
    top: 45px;
    left: 0;
    width: 150px;
    bottom: 0;
    background-color: aquamarine;
    color: black;
    text-align: center;
}
.right{
    position: fixed;
    top: 45px;
    right: 0;
    bottom: 0;
    left: 150px;
    overflow: auto;
    background-color: white;
}
ul{
    list-style: none;
}
.left_ul li{
    margin: 10px 0;
}
.leftA{
    font-size: 20px;
    text-decoration: none;
}
.leftA:hover{
    color: red;
    background-color: aliceblue;
}
.leftA-active{
    background-color: fuchsia;
}
.top_ul{
    float: right;
    height: 45px;
    margin-right: 20px;
}
.top_ul li{
    height: 45px;
}
.profile{
    height: 25px;
    width: 25px;
    border-radius: 50%;
}
.shade{
    display: block;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 100;   /*设置页面高度*/
    background: black;
    opacity: 0;    /*设置透明度*/
}
.dialog{
    position: fixed;
    width: 500px;
    height: 250px;
    background-color: aquamarine;
    z-index: 101;
    top: 50%;
    left: 50%;
    margin-top: -125px;
    margin-left: -250px;
    border: cornflowerblue solid 1px;
}
.hide{
    display: none;
}
a{
    text-decoration: none;
}
a:hover{
    color: red;
}
